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mod cli;
mod config;
mod error;
mod stackexchange;
mod term;
mod tui;
mod utils;

use crossterm::style::Color;
use error::Error;
use lazy_static::lazy_static;
use minimad::mad_inline;
use stackexchange::{LocalStorage, StackExchange};
use term::mk_print_error;
use termimad::{CompoundStyle, MadSkin};

fn main() {
    let mut skin = MadSkin::default();
    // TODO style configuration
    skin.inline_code = CompoundStyle::with_fg(Color::Cyan);
    skin.code_block.set_fgbg(Color::Cyan, termimad::gray(20));
    let mut print_error = mk_print_error(&skin);
    (|| {
        let opts = cli::get_opts()?;
        let config = opts.config;
        let site = &config.site;
        let lucky = config.lucky;
        let mut ls = LocalStorage::new()?;

        if let Some(key) = opts.set_api_key {
            config::set_api_key(key)?;
        }

        if opts.update_sites {
            ls.update_sites()?;
        }

        if opts.list_sites {
            let sites = ls.sites()?;
            let mut md = String::new();
            md.push_str("|:-:|:-:|\n");
            md.push_str("|Site Code|Site URL|\n");
            md.push_str("|-:|:-|\n");
            for s in sites.iter() {
                md.push_str(&format!("|{}|{}\n", s.api_site_parameter, s.site_url));
            }
            md.push_str("|-\n");
            termimad::print_text(&md);
            return Ok(());
        }

        if !ls.validate_site(site)? {
            print_error!(skin, "$0 is not a valid StackExchange site.\n\n", site)?;
            // TODO should only use inline for single lines; use termimad::text stuff
            print_notice!(
                skin,
                "If you think this is incorrect, try running\n\
                    ```\n\
                    so --update-sites\n\
                    ```\n\
                    to update the cached site listing. You can also run `so --list-sites` \
                    to list all available sites.",
            )?;
            return Ok(());
        }

        if let Some(q) = opts.query {
            let se = StackExchange::new(config);
            // TODO get the rest of the results in the background
            if lucky {
                // TODO this needs preprocessing; all the more reason to do it at SE level
                let md = se.search_lucky(&q)?;
                skin.print_text(&md);
                skin.print_text(
                    "\nPress **[SPACE]** to see more results, or any other key to exit",
                );
                if !utils::wait_for_char(' ')? {
                    return Ok(());
                }
            }
            let qs = se.search(&q)?;
            tui::run(qs)?;
        }
        Ok(())
    })()
    .or_else(|e: Error| {
        print_error(&e.to_string())?;
        match e {
            Error::EmptySites => {
                print_notice!(skin, "This can likely be fixed by `so --update-sites`.")
            }
            _ => Ok(()),
        }
    })
    .unwrap();
}